Update omitted parameter 'hd'

[ellemedit]

reference: https://developers.google.com/identity/protocols/OpenIDConnect#authenticationuriparameters

I'm not sure there is need test and how to test.
At this moment, my clients are using the option through casting as any.

• Tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

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[ellemedit]

I signed it!

[googlebot]

CLAs look good, thanks!

[JustinBeckwith]

Thanks for the PR!